ICD-10 Code K52 – Other and unspecified noninfective gastroenteritis and colitis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K52 – Other and unspecified noninfective gastroenteritis and colitis
What it is
K52 identifies noninfective inflammation of the stomach and intestines when the cause is other specified or not specified. Use it for documented gastroenteritis or colitis that is not clearly infectious, ischemic, or inflammatory bowel disease.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include diarrhea, abdominal pain, nausea, vomiting, and colitis symptoms without evidence of infection.
When to use this code
Use K52 when the provider documents noninfective gastroenteritis or colitis and does not name a more specific diagnosis. It also fits cases described as unspecified noninfective colitis or gastroenteritis. Check the record for any stated infectious, drug-related, or chronic inflammatory cause before assigning this code.
Do not use for
Do not use K52 for infectious gastroenteritis, Crohn disease, ulcerative colitis, or ischemic colitis. If the cause is documented elsewhere, code that condition instead.
Coding tip
Review the provider’s wording carefully; if the etiology is unclear, “noninfective” must be supported by documentation.